Module: Mesa
Branch: master
Commit: 4b69ba381766cd911eb1284f1b0332a139ec8a75
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=4b69ba381766cd911eb1284f1b0332a139ec8a75

Author: Jason Ekstrand <[email protected]>
Date:   Fri Dec 15 11:27:39 2017 -0800

anv/pipeline: Don't assert on more than 32 samplers

This prevents an assert when running one unreleased Vulkan game.

Tested-by: Józef Kucia <[email protected]>
Reviewed-by: Topi Pohjolainen <[email protected]>
Cc: "18.0" <[email protected]>

---

 src/intel/vulkan/genX_pipeline.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/intel/vulkan/genX_pipeline.c b/src/intel/vulkan/genX_pipeline.c
index cfc3bea426..82fdf206a9 100644
--- a/src/intel/vulkan/genX_pipeline.c
+++ b/src/intel/vulkan/genX_pipeline.c
@@ -1081,7 +1081,13 @@ emit_3dstate_streamout(struct anv_pipeline *pipeline,
 static uint32_t
 get_sampler_count(const struct anv_shader_bin *bin)
 {
-   return DIV_ROUND_UP(bin->bind_map.sampler_count, 4);
+   uint32_t count_by_4 = DIV_ROUND_UP(bin->bind_map.sampler_count, 4);
+
+   /* We can potentially have way more than 32 samplers and that's ok.
+    * However, the 3DSTATE_XS packets only have 3 bits to specify how
+    * many to pre-fetch and all values above 4 are marked reserved.
+    */
+   return MIN2(count_by_4, 4);
 }
 
 static uint32_t

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